Cut tofu lengthwise into 4 "filets".
Mix together mirin, tamari, ginger and cayenne.
Marinatae tofu in mixture for at least one hour or overnight.
Grill tofu over hot coals until heated through and lightly browned.
1 lb tofu,firm
1/4 c mirin
1/4 c tamari
1 t ginger,fresh,minced
1 dash pepper,cayenne